Admin: ページの作成:「 ==リスト== 追加、更新、削除を検知

 using UnityEngine; using UnityEngine.UI; using Firebase.Database; using System.Collections.Generic; using System;...」

2021-09-19T01:52:22Z

ページの作成:「 ==リスト== 追加、更新、削除を検知 <pre> using UnityEngine; using UnityEngine.UI; using Firebase.Database; using System.Collections.Generic; using System;...」

新規ページ

==リスト==
追加、更新、削除を検知
<pre>
using UnityEngine;
using UnityEngine.UI;
using Firebase.Database;
using System.Collections.Generic;
using System;

public class SampleScene : MonoBehaviour
{
void Start()
{
DatabaseReference userReference = FirebaseDatabase.DefaultInstance.GetReference("user");
userReference.ChildAdded += HandleChildAdded;
userReference.ChildChanged += HandleChildChanged;
userReference.ChildRemoved += HandleChildRemoved;

InputField input = GameObject.Find("/Canvas/InputField").GetComponent<InputField>();
GameObject.Find("AddButton").GetComponent<Button>().onClick.AddListener(delegate {
AddUser(input.text);
});
}
// 受信追加された時
void HandleChildAdded(object sender, ChildChangedEventArgs args)
{
if (args.DatabaseError != null)
{
Debug.LogError(args.DatabaseError.Message);
return;
}
string json = args.Snapshot.GetRawJsonValue();
Debug.Log("HandleChildAdded=" + json); // {"email":"ttt@example","username":"ttt"}

User user = JsonUtility.FromJson<User>(json);
Debug.Log("HandleChildAdded username=" + user.username);
}
// 受信更新された時
void HandleChildChanged(object sender, ChildChangedEventArgs args)
{
if (args.DatabaseError != null)
{
Debug.LogError(args.DatabaseError.Message);
return;
}
string json = args.Snapshot.GetRawJsonValue();
Debug.Log("HandleChildChanged=" + json); // {"email":"ttt@example","username":"ttt"}

User user = JsonUtility.FromJson<User>(json);
Debug.Log("HandleChildChanged username=" + user.username);
}
// 受信削除された時
void HandleChildRemoved(object sender, ChildChangedEventArgs args)
{
if (args.DatabaseError != null)
{
Debug.LogError(args.DatabaseError.Message);
return;
}
string json = args.Snapshot.GetRawJsonValue();
Debug.Log("HandleChildRemoved=" + json); // {"email":"ttt@example","username":"ttt"}

User user = JsonUtility.FromJson<User>(json);
Debug.Log("HandleChildRemoved username=" + user.username);
}
void AddUser(string name)
{
User user = new User(name, name + "@example");
string json = JsonUtility.ToJson(user); // {"email":"ttt@example","username":"ttt"}
// userに存在しないキーを生成
// FirebaseDatabase.DefaultInstance.GetReference("user").Push().Key;
#if Unity_EDITOR
string userId = "pc";
#elif UNITY_ANDROID
string userId = "android";
#elif UNITY_IPHONE
string userId = "iphone";
#endif
FirebaseDatabase.DefaultInstance.GetReference("user").Child(userId)
.SetRawJsonValueAsync(json);
}
}
</pre>

Unity/Firebase/Realtimedatabase/リスト - 変更履歴

Admin: ページの作成:「 ==リスト== 追加、更新、削除を検知
using UnityEngine; using UnityEngine.UI; using Firebase.Database; using System.Collections.Generic; using System;...」